I just picked up a Thermalright TRUE Copper and want to mount it in my mid tower case (Lian Li PC-65B). I have already done the mounting, but I have some worries.
1. This thing is heavy! 4.2lbs. I put everything together and carefully stood the case up. It doesn't appear to be flexing the mobo (ASUS MA89GTDpro), but who knows over time. Have any of you had any experience with this cooler?
2. What fans to use? I currently have one of these: Cooler Master S12 44cfm fans (it was the stock exhaust in my old case). I would like something that flows decently, but still looks nice so that you can see this thing - it looks sick all polished . I was thinking one of these: AeroCool Shark 120mm 82cfm.

That's the one HSF I'd actually be worried about vertically mounting on a motherboard.
Personally, I haven't used it so perhaps there are some other users who could shed some light on the matter, but I just don't see how that honker wouldn't cause some bowing on the board (unless laid flat).

As for fans, CFM isn't the most important thing for HSFs / Radiators, it's static pressure (sustained CFM when met w/ resistance).
That said there are some solid options if you don't mind spending a few bucks on the fans (noiseblockers, GTs are very popular, of course 38mm fans + controllers etc)

First, I have not actually used the True Copper myself but have watched my friend's. So, my experience is somewhat between 1st hand and 2nd hand, probably 1.5 hands...lol.

Here are my comments:-1. Lian Li PC-65B is good as it has a side panel window. In addition to its good thermal performance, True Copper is meant to be a feast for your eyes. To this end, if you do not have any light inside your case, seriously consider adding some. Seeing that orange glow is part of the fun which you have already paid for. Do not waste it.

2. Make sure you have used all the case standoffs and motheroard screws. Tighten them all.
IIRC, even Thermalright does not recommend using True Copper on a vertically mounted motherboard. I think as long as you do not move the case often, it should be OK. The weight is not the potential harm but momentum, caused by moving the case around, is.
To buy better peace of mind, perhaps consider using additional support like Scythe Ninja Wire.

3. To delay oxidation, only handle it with gloves on. If you use bare hands, your finger prints will be all over. You will find, sooner or later, those areas are places where oxidation will first begin.
If you have already touched it, wipe them as clean as possible.
Oxidation only affects thermal performance minimally. It is largely about aesthetics.

4. For fans, that Aerocool fan's blue LED would not look nice with the colour of True Copper.
I suggest either no LED, white LED or orange LED fans (eg XIGMATEK XLF-F1253 with 61 CFM – using a couple of these would be nice.)

First, I have not actually used the True Copper myself but have watched my friend's. So, my experience is somewhat between 1st hand and 2nd hand, probably 1.5 hands...lol.

Here are my comments:-1. Lian Li PC-65B is good as it has a side panel window. In addition to its good thermal performance, True Copper is meant to be a feast for your eyes. To this end, if you do not have any light inside your case, seriously consider adding some. Seeing that orange glow is part of the fun which you have already paid for. Do not waste it.

2. Make sure you have used all the case standoffs and motheroard screws. Tighten them all.
IIRC, even Thermalright does not recommend using True Copper on a vertically mounted motherboard. I think as long as you do not move the case often, it should be OK. The weight is not the potential harm but momentum, caused by moving the case around, is.
To buy better peace of mind, perhaps consider using additional support like Scythe Ninja Wire.

3. To delay oxidation, only handle it with gloves on. If you use bare hands, your finger prints will be all over. You will find, sooner or later, those areas are places where oxidation will first begin.
If you have already touched it, wipe them as clean as possible.
Oxidation only affects thermal performance minimally. It is largely about aesthetics.

4. For fans, that Aerocool fan's blue LED would not look nice with the colour of True Copper.
I suggest either no LED, white LED or orange LED fans (eg XIGMATEK XLF-F1253 with 61 CFM â€“ using a couple of these would be nice.)

1) I have a couple blue led fans in the front of the case that send a nice low glow of the aluminum interior. I had some uv cathodes, but decided to remove them.

2) I have all standoffs and screws except for the bottom right (got the case used and it was missing one.)

3) The true was almost black when I got it (used). Soaked it in vinegar solution and then polished by hand (with gloves on).

4) I was actually looking at the white Xigmateks, just wasn't sure how they do for static pressure.

I mount my TRUE Copper horizontal after a few days use due to the fact the heatsink is just too heavy for my liking. The heatsink itself weight 1.9kg plus the fan (San Aces H1011) is 330g, so it comes out to be more than 5 pounds with the fan on.

For the fan the San Aces works great with the TRUE Copper, but you can get away with something like the Yate Loons, just for your information the Yate Loons is less noisy than the specification appears to be.